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Side by Side Diff: chrome/browser/bookmark_storage.h

Issue 1868: Moves bookmark related classes into bookmarks directory. There are no... (Closed) Base URL: svn://chrome-svn/chrome/trunk/src/
Patch Set: Created 12 years, 3 months ago
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1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #ifndef CHROME_BROWSER_BOOKMARK_STORAGE_H_
6 #define CHROME_BROWSER_BOOKMARK_STORAGE_H_
7
8 #include "base/ref_counted.h"
9 #include "base/task.h"
10 #include "chrome/browser/browser_process.h"
11
12 class BookmarkBarModel;
13 class Profile;
14 class Value;
15
16 // BookmarkStorage handles reading/write the bookmark bar model. The
17 // BookmarkBarModel uses the BookmarkStorage to load bookmarks from
18 // disk, as well as notifying the BookmarkStorage every time the model
19 // changes.
20 //
21 // Internally BookmarkStorage uses BookmarkCodec to do the actual read/write.
22
23 class BookmarkStorage : public base::RefCountedThreadSafe<BookmarkStorage> {
24 friend class BookmarkStorageBackend;
25
26 public:
27 // Creates a BookmarkStorage for the specified model
28 BookmarkStorage(Profile* profile, BookmarkBarModel* model);
29
30 // Loads the bookmarks into the model, notifying the model when done. If
31 // load_from_history is true, the bookmarks are loaded from the file written
32 // by history (StarredURLDatabase).
33 void LoadBookmarks(bool load_from_history);
34
35 // Schedules saving the bookmark bar model to disk.
36 void ScheduleSave();
37
38 // Notification the bookmark bar model is going to be deleted. If there is
39 // a pending save, it is saved immediately.
40 void BookmarkModelDeleted();
41
42 private:
43 // Callback from backend with the results of the bookmark file.
44 void LoadedBookmarks(Value* root_value,
45 bool bookmark_file_exists,
46 bool loaded_from_history);
47
48 // Schedules a save on the backend thread.
49 void SaveNow();
50
51 // Returns the thread the backend is run on.
52 base::Thread* backend_thread() const { return backend_thread_; }
53
54 // The model. The model is NULL once BookmarkModelDeleted has been invoked.
55 BookmarkBarModel* model_;
56
57 // Used to delay saves.
58 ScopedRunnableMethodFactory<BookmarkStorage> save_factory_;
59
60 // The backend handles actual reading/writing to disk.
61 scoped_refptr<BookmarkStorageBackend> backend_;
62
63 // Thread read/writing is run on. This comes from the profile, and is null
64 // during testing.
65 base::Thread* backend_thread_;
66
67 DISALLOW_COPY_AND_ASSIGN(BookmarkStorage);
68 };
69
70 // Used to save the bookmarks on the file thread.
71 class BookmarkStorageBackend :
72 public base::RefCountedThreadSafe<BookmarkStorageBackend> {
73 public:
74 explicit BookmarkStorageBackend(const std::wstring& path,
75 const std::wstring& tmp_histor_path);
76
77 // Writes the specified value to disk. This takes ownership of |value| and
78 // deletes it when done.
79 void Write(Value* value);
80
81 // Reads the bookmarks from kBookmarksFileName. Notifies |service| with
82 // the results on the specified MessageLoop.
83 void Read(scoped_refptr<BookmarkStorage> service,
84 MessageLoop* message_loop,
85 bool load_from_history);
86
87 private:
88 // Path we read/write to.
89 const std::wstring path_;
90
91 // Path bookmarks are read from if asked to load from history file.
92 const std::wstring tmp_history_path_;
93
94 DISALLOW_EVIL_CONSTRUCTORS(BookmarkStorageBackend);
95 };
96
97 #endif // CHROME_BROWSER_BOOKMARK_STORAGE_H_
98
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